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2.5

 

FIRST HEATER COMMISSIONING 

Before opening the power supply, the tank must be filled with water. The process of first heating 
must be executed by licensed professional who has to check it.  Both the hot water outlet pipe 
and safety armature parts may be hot. 

During the heating process the pressurized connection water that increases its volume due to 
heating  must  drip  off  the  safety  valve.  In  non-pressurized  connection  water  drips  off  the 
overflow  combination  faucet.  When  heating  is  finished,  the  set  temperature  and  the  actual 
temperature of consumed water should be roughly equal. After connecting the heater to the 
water  main  and  electrical  power  system,  and  after  checking  the  safety  valve  (following 
the instructions attached to the valve), the heater can be put into operation. 

Procedure of putting the heater into operation: 

1.

 

Check the wiring and water supply; check correct position of the thermostat sensors, they have to 
be inserted all the way. The sensors must be inserted all the way in, first the operating and then the 
safety thermostat.  

2.

 

Open the hot water valve on the combination faucet. 

3.

 

Open the cold water inlet valve to the heater. 

4.

 

As soon as the water starts running through the hot water valve, the heater is filled, and the valve 
can be closed. 

5.

 

Prior to putting the heater into operation, screw on the front heater guard which closes the access 
to the electric compartment of the heater.  

6.

 

When hot service water heating by electric energy, switch on the power supply. 

7.

 

When commencing operation, flush the heater until the cloudiness in the water is gone. 

8.

 

Make sure to fill in properly the warranty certificate. 

 

2.6

 

PUTTING OUT OF SERVICE, DISCHARGE 

If the hot water heater is put out of service for a longer time, or if it is not going to be used it 
has to be drained and disconnected from the electric supply network. The switch for the supply 
lead or the fuse cut-outs have to be shut off.  

At places with permanent risk of frost the hot water heater must be drained before the cold 
season starts if the appliance remains out of service for several days and if the power supply 
is disconnected.  

 

 

Summary of Contents for DRAZICE TO - 20.1

Page 1: ...PERATING AND INSTALLATION MANUAL ELECTRIC WATER HEATER TO 20 1 Družstevní závody Dražice strojírna s r o Dražice 69 294 71 Benátky nad Jizerou tel 420 326 370 911 fax 420 326 370 980 e mail export dzd cz ...

Page 2: ...NS 6 2 1 OPERATING CONDITIONS 6 2 2 WALL MOUNTING 6 2 3 PLUMBING FIXTURE 7 2 4 ELECTRIC WIRING 9 2 4 1 ELECTRIC INSTALLATION GENERAL INFORMATION 9 2 5 FIRST HEATER COMMISSIONING 10 2 6 PUTTING OUT OF SERVICE DISCHARGE 10 2 7 INSPECTION MAINTENANCE CARE FOR THE APPLIANCE 11 2 8 MOST FREQUENT FUNCTION FAILURES AND THEIR CAUSES 12 3 IMPORTANT NOTICES 12 3 1 INSTALLATION REGULATIONS 12 3 2 DISPOSAL OF...

Page 3: ...ble person or unless properly instructed by such responsible person The manufacturer reserves the right for engineering modification of the product The product is designed for permanent contact with drinkable water It is recommended to use the product in indoor environment with air temperatures from 2 C to 45 C and a relative humidity up to 80 Product s reliability and safety is proven by tests im...

Page 4: ...oms lavatories kitchens or near sanitary units of panel flats and complies with the requirements of Standards with the IP 44 protection class Its benefit is that it heats up water by power in an unlimited all day time range The time of heating service water to the recommended temperature of OPTIMUM is about 31 minutes Consumption of hot water in households depends on the number of people amount of...

Page 5: ... minimum heat losses Electric wiring is placed in the bottom part of the heater under an easily removable guard of the heater by loosening two screws on that guard Temperature of water can be set by a thermostat within the range between 5 C and 75 C using the symbols on the thermostat selector button Figure 1 Cold water inflow is indicated with a blue ring hot water outflow is indicated with a red...

Page 6: ...placement as the case may be If water is strongly calcareous we recommend that any of the common decalcifying devices was installed with the appliance or that the thermostat was set to the minimum operating temperature of 55 C setting to position OPTIMUM For proper operation drinkable water of adequate quality shall be used To avoid potential sediments we recommend that the device was installed to...

Page 7: ...ric plugging remained accessible and no heat accumulation occurs Free space of up to 600 mm from the bottom edge of the heater has to be available under the heater When mounted directly under the ceiling the distance from the ceiling has to be 100 mm at least 2 3 PLUMBING FIXTURE The safety valve can be mounted both in vertical and horizontal position in the indicated direction of cold water flow ...

Page 8: ...emented at least once a month and after each heater shutdown for more than 5 days Water may be dripping off the drain pipe of the safety valve the pipe must be open into the air pointed down environment temperatures must not drop below zero Find necessary pressure values in the below Table 2 Heaters must be provided with a discharge valve mounted on the cold service water inlet to the heater for p...

Page 9: ...on must be confirmed on the warranty certificate The circuit must contain circuit breaker protector In order to enhance the protection of connection in bathrooms and shower inserts pursuant to Standard the appliance is provided with a grounding terminal for connecting with a yellow green protective conductor on minimum section 4 mm2 To adjust the distance from the wall connect the wire of the exte...

Page 10: ...e sensors must be inserted all the way in first the operating and then the safety thermostat 2 Open the hot water valve on the combination faucet 3 Open the cold water inlet valve to the heater 4 As soon as the water starts running through the hot water valve the heater is filled and the valve can be closed 5 Prior to putting the heater into operation screw on the front heater guard which closes t...

Page 11: ... to be checked regularly based on the information contained in the attached safety valve manual In common operation such a check needs to be implemented at least once a month and after each heater shutdown that exceeds 5 days Attention In doing so the cold water supply pipe and the connection fitting of the tank may get heated If the hot water heater does not work or if hot water is not withdrawn ...

Page 12: ...ric installation handling setting and regulation feature exchange may only be implemented by an authorized service company The thermal fuse must not be turned off In case of thermostat defect the thermal fuse interrupts electric power input to the heating element if the water temperature in the heater exceeds 90 C Both the electric and water installation must follow and meet the requirements and r...

Page 13: ... Take the water boiler packages to a waste disposal place determined by the town When the operation terminates disassemble and transport the discarded and unserviceable heater to a waste recycling center collecting yard or contact the manufacturer 4 PRODUCT ACCESSORIES The product is supplied with a safety valve G1 2 screws 6 x70 mm 2 pcs plastic dowels 12x60 mm 2 pcs The above parts are packed an...

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